Pipe wrench tooth sharpener and cutting tool



1950 A. s. JUNG 2,518,018

PIPE WRENCH TOOTH SHARPENER AND CUTTING TOOL INVENTOR ALBERT G. JUNG BY //r Aug. 8,-1950 I A. G. JUNG PIPE WRENCH TOOTH SHARPENER AND CUTTING TOOLY 3 Sheets-Sheet 2 Filed July 19, 1948 ALBCISQTJOURIV Y I a g /fg Aug. 8, 1950 A. G. JUNG PIPE WRENCH TOOTH SHARPENER AND CUTTING TOOL Filed July 19, 1948 3 Sheets-Sheet 3 INVENTOR ALBERT G. JU NG iatenteci Aug. 8, 1950 "OFFICE PIPE WRENCH TOOTH SHARPENER AND CUTTING TOOL Albert G. un Burlington, Wis. Application July 19. 1948, Serial Nb. 39,407 3' Claims. (01. 51-34 My invention refers to combination power driven tools for sharpeningthe biting teeth of any type of pipe wrench and for cutting tubes, rods, bars or the like, into different lengths.

The primary object of my invention is to pro-" vide a basehaving an adjustable vise-head, as-

A further object of my invention is to provide a threaded spindle in connection with a slidable bed piece, wherebythe cutting wheel, carried by the same, is adjusted back and forth, relative to the work, in conjunction witha crank connection between the bed and cutting wheel supports, whereby saidcutting wheel is reciprocated longitudinally with reference to the work.

-With the above and other objects in ,viewwhich will appear as the description proceeds, the invention residesin the novel construction, combination and arrangement of parts, substan-' tially as hereinafterdescribed, and more particularly defined by the appended claims, it being understood that such. changes in the precise embodiment of the herein disclosed invention may be made as come within the scope ofthe claims. Y

Inthe accompanying drawings is illustrated one complete example of the physical embodiment of the present invention constructed according to the best mode so far devisedforthe practical application of the principles thereof.

In the drawings:

Fig. 1 represents a side elevation of a cutting tool embodying the featuresv of my invention, with parts being broken away and in section to more clearly illustrate structural features.

Fig. 2 is a sectional plan view of the same, the

section being indicated by line 2-2 of Fig. 1.

Fig. 3 is a cross sectional view of the tool, the section being indicated by line 3-3 of Figs. 1

and 2.

Fig. 4 is another cross sectional view through the tool, the section being indicated by line 4-4 of Fi 1. r v I Fig. 5 is a detail plan sectional view through the front end of the tool illustrating vise-head gripping means for the work, the section being indicated by line 5-5 of Fig. 1.

Fig. 6 is another cross sectional view through the vise-head end of the machine, the section being indicated by line 68 of Fig. 1 and showing the fixed toothed jaw of a pipe wrench.

Fig. 7.is a detail sectional view through the base support of the vise-head, the section bein indicated by line 'l--! of Fig. 1.

Fig. 8 is a cross sectional view through the visehead mechanism upon the same plane as that indicated with reference to Fig. 6 of the drawings, the same particularly illustrating the movable toothed jaw of a pipe wrench.

Fig. 9 is a cross sectional View through the vise-head mechanism in a changed position for clamping a length of pipe to be cut in sections, having a vise-head support nest attached to the bed; and

Fig. 10 is a detail sectional side elevation of said nest.

Referring by characters to the drawings, 1 inings, the upper face of the bed 3 has extending therefrom transversely disposed rails 6, which rails are in dove-tailed engagement with longi-' tudinally disposed rails 6 depending from a supporting shelf 1.

Pivotally; mounted upon the rear end of the supporting she-1f l is a rocker-arm 8, and secured to the front end of said rocker-arm is a transversely disposed sleeve 9, the said sleeve serving as a journal for a shaft ill, which shaft, at its front end, hassecured thereto a cutting wheel I l, the same being usually fabricated from any suitable abrasive material, having a V-shaped cutting edge.

Power is applied to the cutting wheel li by a motor l2, suitably secured to the rear end of porting shelf 1 are connected by a tie-rod I3 .;;,:;apart, with reference to their pivot connection, by

having its upper end in threaded union with an adjusting wheel l3, it bein understood that the said rocker-arm anad supporting shelf are spread 3 a coil spring I 4, which spring is interposed between the faces of the arm and shelf, as best indicated in Figs. 1 and 3 of the drawings.

By particular reference to Figs. 1 and 3 of the drawings, it will be noted that the supporting shelf I is provided with a central groove 8 therein and nested within this groove is a strap 15, the rear end of which is in pivotal union with a boltlti' that is carried by a lug extending downwardly from the shelf.

The front end of the strap 15 is in pivotal union with a lever IE, which lever extends up wardly from a shaft H. The shaft II is journaled in bearing ears i8 that extend forwardly from the upper face of the bed 3 and one endof said shaft carries a hand crank l9.

Due to the above described coupling connection between the crank shaft l? and supporting shelf, it will be noted that when the crank I9 is actuated back and forth, it will cause the supporting shelf and associated rockerai'm and cuting wheel H to move longitudinally backw-ardly and forwardly, whereby said wheel will travel across a selected tooth'of a series that comprise the fixed jaw element B of a pipe wrench, as best indicated in Figs. 1 and 3 of the drawings.

In the above referred to sharpening movement of a wrench tooth, it should be noted that after the wheel I! has moved back and forth for a sufiicient number of strokes, the said wrench tooth will then -be properly sharpened.

In the next sharpening stepof the heel, the rod carrying adjusting wheel I 3' is rotated, whereby the rocker arm, under its spring tension, will lift to thus raise the cutting edge of the wheel I I clear of the wrench head. tooth.

After the above movement of the cutting Wheel, it must be transversely shifted to the neXt tooth of the wrench head for sharpening purposes. To accomplish the desired shifting movement of the wheel, th cranked rod is slightly rotated, whereby the bed 3 will shift transversely and thus align the cutting edge-of the wheel H with the next tooth cavity of the wrench head B, it being understood that in sharpenin the series of teeth, the head B is firmly held between a fixed jaw 29 and a movable jaw 21 of a vice-head.

As best shown in Figs. 1, and 6 of the drawings, the fixed jaw 29 extends forwardly from a rectangular base 22 and said base is formed with a'shouldered channel 23, into which ashank 21' of the movable jaw 2! extends and said movable jaw is held in its adjusted position by a cap 2 1 which is secured to the shank of the'movable The outer end of the rectangular base 22 of the vise-head has extended forwardly therefrom a lug 25 provided with a threaded aperture for the reception of a correspondingly threaded spindle 26, the inner end of which spindle is freely rotatable and confined in an aperture of the movable jaw 2 I, the outer end of this spindle terminating with a handle 26, whereby upon rotation of said spindle, the movable vice jaw will be shifted back and forth, to free or grip the wrench head B between the vise-head jaws.

The vise base 22 is secured to a bracket 21, having a circular bed 21', the same bein interrupted by a rectangular opening 28. The bracket bed 2'! is nested within a spacing ring 29, which ring coincides with the bed 21 and is simply provided for the purpose of elevating the vise-head. The ring 29, in turn, coincides with a ring term-inal 30, which forms an extension of the base I. The bracket bed 21', spacing ring 2G, and ring 4 terminal 30 are each provided with central aper' tures for the reception of a pivot bolt 3|, whereby the nested parts are horizontally adjusted and firmly clamped to align the wrench heads for sharpening purposes.

As shown in Fig. 8 of the drawings, the adjustable wrench head C, which is detached from the head B,is fitted into the vise-head and securely clamped for sharpening the teeth of said adjustable wrench head.

Obviously, while I have described the tool in connection withsharpening spanner wrench head teeth, I may, with certain refinements, also sharpen the teeth of saws or the like, under which conditions it is understood that the cutting edge of the wheel I I is varied.

Referring now especially to Fig. 9 of the drawings, when it is desired to cut pipe, or the like, into lengths, I provide a rectangular trough 32, having a circular base 32, which base is provided with a threaded aperture 33, for the reception of the pivot bolt 3!, that clamps the trough to the extension ring 30 of the base I.

: The vise-head base 22 is then inserted in the F contradistinction to their vertical position, as

shown in Fig, 1 of the drawings.

The tube or work D then clamped within the vise at a right angle to the cutting edge of the wheel II, which wheel, in this operation, may be fabricated from metal and provided with a saw toothed cutting edge.

I-claim:

-1. A tool of the character described, comprising a machine base, a ring extending from the machine base, a bracket having a circular bed rotatably mounted upon the ring, a vise-base secured to the bracket, having a channel therein and a fixed jaw extending from one end of the vise-base, a movable jaw slidably engaging the I vise-base channel, a lug extending from the other end of the vise-base, a threaded spindle adjustably mounted in the vise-base lug and connected to the movable jaw, whereby a piece of work is held between the jaws and rotatably adjusted for cutting teeth at various angles in the piece of work, a bed slidably mounted upon the machine base, means for adjusting the same transversely of the machine base, a shelf mounted upon the bed having means for adjusting the same longitudinally of said machine base, a rocker arm mounted upon the shelf, means for vertically adjusting the rocker arm, "and a cutting wheel carried by the rocker arm positioned over the vise base. 1

2. A tooth sharpening tool, comprising a base having a transversely disposed ribbed pad, a bed slidably mounted between the pad ribs, a supportingshelf slidable with the bed and in tongue and groove engagen'ient with the bed, a manually actuated crank s'haft journaled in the front end of said bed, a rocker arm pivoted to the rear end of the supporting shelf, a strap connecting the rear end of the shelf and crank arm, whereby the shelf and rocker arm may be moved back and forth and means carried by the said shelf for vertically adjusting the rocker arm, a motor driven cutting wheel journaled upon the front end of the aforesaid rocker arm, and a work holding vise-head mounted upon the base under the cutting wheel.

3. A cutting tool comprising a base having a end of the shelf and crank shaft, a rocker arm 10 in pivotal connection with the rear end of said shelf, a transversely disposed sleeve extending from the frontend of the rocker arm, a cutting wheel having a shaft journaled in the sleeve above the jawed vise, a motor mounted upon the rear portion of the rocker arm in drive belt connection with the cutting wheel shaft, spring means normally tending to swing the rocker arm to a raised position on its pivot, a threaded rod carried by the front end of the shelf, and a nut threaded on said rod engaging the rocker arm for moving the rocker arm down to an adjusted position against the tension of said spring means.

ALBERT G. JUNG.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 15 Number Name Date 1,182,615 Armstrong May 9, 1916 2,418,737 Talboys Apr. 8, 1947 

